US Bridges

Il 251 over IL38 Cnw&bn RR&1 Ave

Fair

Ogle County, Illinois · In Rochelle · Structure no. 071006600000000

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
990 ft
15 main spans
Daily traffic
7,900
2023 count
Owner
State
State Highway Agency

About this bridge

Il 251 over IL38 Cnw&bn RR&1 Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 251 over IL38 Cnw&bn RR&1 Ave in Ogle County, Illinois. It was built in 1981, so it is 44 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 7,900 vehicles a day, roughly 7% of them trucks, projected to reach 7,592 by 2046. The structure is 990 ft (301.8 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesIl 251
CrossesIL38 Cnw&bn RR&1 Ave
LocationIn Rochelle
RouteState Highway 251
CountyOgle County
StateIllinois
Coordinates41.92188, -89.06874
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating45.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans15
Design loadHS 20 + Mod
Structure length990 ft (301.8 m)
Longest span66 ft (20.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic7,900 (2023)
Projected traffic7,592 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Il 251 over IL38 Cnw&bn RR&1 Ave built?

It was built in 1981, making it 44 years old in 2025.

What condition is Il 251 over IL38 Cnw&bn RR&1 Ave in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does Il 251 over IL38 Cnw&bn RR&1 Ave carry?

About 7,900 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Il 251 over IL38 Cnw&bn RR&1 Ave?

The structure is 990 ft (301.8 m) long with a longest span of 66 ft (20.1 m) and a deck 35 ft wide.

Who owns Il 251 over IL38 Cnw&bn RR&1 Ave?

It is owned by the State Highway Agency.